Primary General Science Glossary

This is a general primary science glossary. For class specific glossaries please go to the specific subjects


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D

Downforce

The downward pressure created by the aerodynamic characteristics of a car that allows it to travel faster through a corner by increasing the pressure between the contact area of the tire and the road surface, thus creating more grip.

Dye

A usually soluble substance for staining or colouring e.g. fabrics or hair.

E

Echo

The repetition of a sound resulting from reflection of the sound waves.

Echo-location

Determining the location of something by measuring the time it takes for an echo to return from it.

Echo-sounding

Determining the location of something by measuring the time it takes for an echo to return from it.

Eclipse

An eclipse is an astronomical event that occurs when one celestial object moves into the shadow of another.

Eddy-current

Circulating movement of electrical current within an electrical conductor caused by the intersection of the conductor with a moving magnetic field.

Elastic energy

Potential energy that is stored when a body is deformed as in a coiled spring or elastic band

Elastomer

Any polymer having the elastic properties of rubber.

Electric generator

A device that converts mechanical or kinetic energy to electrical energy. The reverse conversion of electrical energy into mechanical energy is done by a motor; motors and generators have many similarities.

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